Installing deluge using apt install deluge
on Ubuntu 20.04 results in version 2.x being installed and version 2.x of Deluge cannot be used as a thin client for version 1.x. This is a problem if you have a remote install that can't be upgraded to version 2.x and you don't want to use the Web GUI for everything.
Download the script:
wget https://raw.githubusercontent.com/josh-gaby/deluge1.3.15-Ubuntu-20.04/main/install_deluge-1.3.15.sh
OR clone using Git
git clone https://github.com/josh-gaby/deluge1.3.15-Ubuntu-20.04
Make the script executable:
chmod +x install_deluge-1.3.15.sh
Run the script as sudo:
sudo ./install_deluge-1.3.15.sh